Steam pipeline compensator

Abstract

The invention relates to a steam pipeline compensator which comprises an outer sleeve and a core barrel, wherein an anti-pull ring is arranged at the sleeving-in end of the core barrel; an inner baffle ring corresponding to the anti-pull ring is arranged on the inner wall of the outer sleeve; a separation ring with a hole in the outer wall is sleeved on the core barrel; an annular main filler sealing cavity is formed between the separation ring and the inner baffle ring; a pressure cover sleeved with the core barrel is fixed at the right end of the outer sleeve; an annular auxiliary filler sealing culvert is formed between the baffle ring and the pressure cover. The steam pipeline compensator is characterized in that the hole is formed in the outer wall, which corresponds to an separation ring, of the outer sleeve and a storage tank is hermetically connected with the hole; low-melting-point metal or alloy with the melting point lower than 90 DEG C is arranged in the storage tank. The steam pipeline compensator has the advantages that the advantages of an underground maintainable sleeve compensator are kept and the steam leakage phenomenon of the compensator is avoided.

Description

technical field [0001] The invention relates to a steam pipeline compensator, which belongs to the field of pipeline compensators. Background technique [0002] The pipeline compensator is mainly to solve the problem of thermal expansion and contraction of the pipeline caused by temperature changes, eliminate the internal stress of the pipeline, and keep the pipeline network in good working condition. At present, there are mainly three forms of compensation for steam pipeline compensators: one is natural compensation, the other is metal bellows compensation, and the third is sleeve compensator compensation. There are certain deficiencies in the above three compensation methods. Natural compensation means that during the installation of the steam pipeline, a "U" bend, "Z" bend, or "L" bend is set at regular intervals on the straight section of the pipeline, and the elastic deformation of the pipeline is used to realize the smoothness of the pipeline. Heat and cold compensat...

AI Technical Summary

Problems solved by technology

Its advantages are: durable, not easy to leak steam, and high pressure bearing capacity; its disadvantages are: large space occupation, large investment, and small compensation amount

Metal bellows compensation is to install a section of metal bellows at regular intervals on the straight section of the steam pipeline. Its advantages are: small space occupation and no steam leakage within its fatigue range; its disadvantages are: low pressure bearing capacity, Moreover, due to the large temperature fluctuations of most steam pipes, the expansion and contraction times of the pipes are many, frequent movements can easily cause fatigue of the bellows, and greatly reduce the service life of the bellows.

The advantages of sleeve compensator compensation are: large compensation amount, small space occupation, and high pressure bearing capacity; the disadvantages are: no maintenance, easy to leak steam during use, and heavy maintenance workload, so it is rarely used now

However, this technology cannot prevent the occurrence of steam leakage in the compensator

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